Business Expense Categories: How to Organize Expenses

Business expense categories are the labels you give each thing your business spends money on, such as advertising, supplies or travel. If you're a US sole proprietor, a practical way to set them up is to name your categories after the expense lines on IRS Schedule C, "Profit or Loss From Business (Sole Proprietorship)", so your totals line up with the form at tax time. Record every expense with a category and its receipt, keep personal spending out, and review the totals by category each month.

Billed publishes this page. The US tax points below are quoted from IRS forms and publications, opened on October 30, 2026. This page covers how to organize expenses, not which expenses you can deduct. For that, see the guide to business tax deductions and the tax-deductible business expenses checklist, and ask your accountant.

The Schedule C expense lines (US)

Part II of Schedule C (Form 1040) 2026 lists these expense lines. The labels are quoted from the form:

• Line 8: "Advertising"
• Line 9: "Car and truck expenses"
• Line 10: "Commissions and fees"
• Line 11: "Contract labor"
• Line 12: "Depletion"
• Line 13: "Depreciation and section 179 expense deduction"
• Line 14: "Employee benefit programs"
• Line 15: "Insurance (other than health)"
• Line 16a: "Mortgage (paid to banks, etc.)"; line 16b: "Vehicle loan"; line 16c: "Other" (interest)
• Line 17: "Legal and professional services"
• Line 18: "Office expense"
• Line 19: "Pension and profit-sharing plans"
• Line 20a: "Vehicles, machinery, and equipment"; line 20b: "Other business property" (rent or lease)
• Line 21: "Repairs and maintenance"
• Line 22: "Supplies"
• Line 23: "Taxes and licenses"
• Line 24a: "Travel"; line 24b: "Deductible meals"
• Line 25: "Utilities"
• Line 26: "Wages (less employment credits)"
• Line 27a: "Energy efficient commercial buildings deduction"
• Line 27b: "Other expenses"

The form also says: "Enter expenses for business use of your home only on line 30." Line numbers and labels can change between tax years, so check the form for the year you're filing. If you file a different return, such as for a partnership or corporation, its expense lines differ; ask your accountant.

Keep business and personal spending apart (US)

IRS Publication 334 (2025), Tax Guide for Small Business, says: "If you have an expense that is partly for business and partly personal, separate the personal part from the business part." For which business expenses are deductible, see the guide to business tax deductions and the tax-deductible business expenses checklist, and ask your accountant.

How to set up your categories

1. Start from the Schedule C lines that apply to your business, and leave out the ones that don't, such as depletion or wages if you have no employees.
2. Add subcategories inside a line if you want more detail, such as software and printing under office expense or supplies, as your accountant prefers. Keep the parent line clear so the totals still add up to the form.
3. Use the same category names everywhere: in your expense tracker, your bank exports and anything you send your accountant.
4. Keep an "Other expenses" category small by giving each new type of spending its own category once it repeats.
5. Keep personal spending out of business categories. If something is partly personal, record only the business part, as Publication 334 describes.

For special cases, see how to track mileage for business, how to claim home office expenses and what tax depreciation is.

Worked example: one month, sorted into categories

The business and figures here are a sample, invented for this example. Your accountant decides which line each expense belongs on.

A freelance designer's business card shows these March charges:

• Online ads: $250.00, category "Advertising".
• Paying a freelance illustrator: $1,200.00, category "Contract labor".
• Printer paper and ink: $85.00, category "Supplies".
• Train ticket to a client meeting: $140.00, category "Travel".
• Electricity for a rented studio: $95.00, category "Utilities".
• A personal lunch paid on the business card by mistake: $40.00, flagged as personal, not a business expense.

Total charges: $250.00 + $1,200.00 + $85.00 + $140.00 + $95.00 + $40.00 = $1,810.00.

Business expenses: $1,810.00 − $40.00 = $1,770.00, split across five categories. Contract labor is $1,200.00 of the $1,770.00, so it's the first category to check against invoices from the illustrator.

Keep receipts with each expense

Attach the receipt when you record each expense, so the category and the proof stay together. For what records to keep, see how to create an expense policy, and for reimbursing staff, the guide to reimbursement policies.

Where Billed fits

Billed's expense and receipt tracking page says "An expense in Billed records who you paid, when, how much and which category it belongs to, with the receipt attached to the same entry." It also says to "Give every expense a category so your spending is already sorted when you file taxes or hand the year to your accountant," and that "Billed's expense report can group your expenses by category." To compare tools, see expense tracking apps for small business, and for methods, expense tracking for small business.

Related Articles

• Expense Tracking for Small Business: Methods, Tools, and Tax Benefits
• Guide to Business Tax Deductions for Small Businesses
• How to Create an Expense Policy for Your Small Business
• What Is a Tax Write-Off?

Frequently Asked Questions

What are the IRS categories for business expenses?

For US sole proprietors, Part II of Schedule C lists the expense lines, such as advertising, car and truck expenses, contract labor, insurance (other than health), office expense, supplies, travel, deductible meals and utilities. The full list is on this page. Check the form for the tax year you're filing.

What number of expense categories should a small business use?

Enough to match the Schedule C lines your business uses, plus any subcategories your accountant finds helpful. Keep an "Other expenses" category small by giving repeated types of spending their own category.

What counts as a business expense?

This page covers organizing expenses, not which ones are deductible. For that, see this site's guide to business tax deductions, and ask your accountant.

What should I do with an expense that's partly personal?

Publication 334 says: "If you have an expense that is partly for business and partly personal, separate the personal part from the business part." Record only the business part in your business categories.

Can I change my categories later?

Yes, but keep the names consistent within a tax year where you can, so monthly totals stay comparable and match what you give your accountant.